Typewriting machine



E. L. HARMON.

TYPEWRITING MACHINE.

APPLICATION FILED JULY23. 1919.

Patented J an. 24, 1922.

' 3mm: Mtoz wanna I I have illustrated my present ln'vention as "appliedto a machine the Corona type, n which an upright bail 5, plvoted at 6,1s

EDWIN L. HARMON, OF GROTON, NEW YORK, ASSIGNOR TO "COMPANY, INC., O15GROTON, 'NEW YORK, A

CORONA TYPEWRITER CORPORATION OF NEW YORK.

TYPEWRITING MACHINE.

Specification of Letters Patent.

Patented Jan. 24, 1922.

Application filed July 23, 1919. Serial No. 312,805.

T0 allwhmn 2'2: may concern:

'Be'it known that I, Enwm L. HARiroN, a citizen of the United States ofAmerica, and a resident of Groton, county of Tompkins, and State of NewYork, have invented certain new and useful Improvements in Typewriting'Machines, of which the following is a full and clear specification.

The object of this invention is to provide a 'universal-baraction'adapted especially to maintaining the usual key-leverstroke, asmore fully hereinafter set forth.

In the drawings- Fig. 1 is a vertical longitudinal sectional viewshowing'so much of a typewriting machine as is necessary to show mypresent invention;

Fig. 2 is a similar view showing the parts in another position;

F ig. 3 is a detail perspective view showing the parts hereinafterdescribed; and Figs. 4 and 5 fragmentary sectional views taken on theline 55 of Fig. 1 showing the spacing lever stop lug twisted intodifierent swung rearwardly at its upper end to impart to the escapementa carriage-feed-operation. Each of the two uprlghtarms of the bail 1sprovided with aforwardly-and-downwardlyextendingarm 7 provided with alateral lug "orpin 8at itslo'we'r extremity. Embracing each of the pins8 is a fork 9 formed on the rear end of theadjacent side-arm 10 of theuniversal-bar-frame, 'SEllCl frame consisting "of'said arms 10 and twotransverse connect near saidpivotal point and'the bar 11 being "locatedattheforwardextremities of the arms 10.

It will be'seen'that depression of the forperend' of the bailbackward togive the carriage-feed an operation.

: "key-lever 1 1, which is pivoted atits rear end irithe fulcrum-bar 15;coo'perates'with the front bar 11- ,the 'key lever being provided With aforwardly-extending finger 1.6 which The usual letternormally bearsupon'the upper face of said bar 11. 'lhespace-bar-levers 17 are pivotedat their rear ends to the same fulcrum-bar l5 and are provided with armsor fingers 18, similar to the fingers 16 carried by the keylevers butturned in the opposite direction, namely, rearwardly, so as to bear uponthe upper face of the rear bar 12 of the universal-frame. It will beseen, therefore, that whether the universal-frame be actuated by shortenthe movement of the spacebar while duced because of the fact that theoperating finger 18 engages the universal-frame much nearer to itspivotal point 13' than is the case with the fingers 16 of thekey-levers. In other-words, the letter-key-levers and the space-barim)art to the bail. 5 (through the Inediumof t e universal-frame and itsconnections) the same movement; but in the case of the space-key'ashorter stroke will be sufficient to impart said'movernent. Of course,the power required to operate the universalframe through the medium ofthe spacinglevers will be somewhat greater than that required to operateit through the "medium of the key-levers, but this increased'eifort willbe so slight that it will be negligible.

To limit the up-anchdown movement of the spacing-levers 17, I provideeach with an integral forwardlyextending finger 19 which vibratesbetween a bottom flange 20 of the frame and overhanging flange 21formedintegral with the front upper edge of the frame, and to cushionthe blows of the finger19 against these flanges 20 and 21 I slip uponthe finger19 .a tubular rubber sleeve 22. The finger 19 is arrangedhorizontally fiat-wise, it being twisted to bring 'it to this position;and to vary the throw of the space-barit is simply necessary to twistthe finger rotatively,"as shown in Fig. 5.

It will be understood that it is'not essential that the universal-framestructure shall consist of two separated bars 11 and 12, since it isobvious that these bars may be made integral, the essential requirementbeing simply that thespacing-leverfingers 18 shall engage theuniversal-frame at points nearer to the pivot 18 than the points engagedby thefingers of the writing levers.

tending fore and aft of the machine, type-' actuating levers operable bythe character keys and extending fore and aft of the machine, and auniversal rocking frame operable by all of said levers for actuating anescapement, said spacing levers and the type-actuating levers engagingover the frame forward of their fulorums andat the same side of thefulcrum of the frame, and the spacing levers engaging the frame ashorter distance from their fulcrums and closer to the fulcrum of theframe than the type-actuating levers.

2. In a typewriting machine, the combination with a universal-bar-frame,pivotally supported and embodying side-arms together with a pair oftransverse arms one being arranged nearer the pivotal point than theother, of letter-key-levers arranged to cooperate with the bar farthestfrom the pivotal point, and spacing-levers adapted to coope ate with theother bar, for the purpose set forth.

3. In a typewriting machine, the combination of character keys, a spacebar,

spacing levers operable by the space bar,

type-actuating levers operable by the character keys, pivotallysupported universal bar mechanism, projectionson all of said. leversadapted to engage said mechanism,

the )ro'ections on the s acin levers bein b '3 so located as to exertpressure on said mechanism closer to its pivotal point than theprojections on the key levers, and means pivotally supporting thespacing and type-aetuat ing levers equal distances from the pivotalpoint of the universal bar mechanism.

1-. In a typewriting machine, a pivoted bail for actuating theeseapement, the arms of this bail being providead withforwardlyand-downwardly-extending arms each carrying a lateral pivot, auniversal-bar-frame provided at its rear ends with forks adapted toembrace saidpivots, and key-lever means for operating said frame. 7

5. In a typewriting machine, the combination of character keys, a spacebar, spacing levers operable by the space bar, typeact'uating leversoperable by thecharacter keys, a unlversal rocking device underlying Iall the levers, means'for pivotally support- ,ll'lg the spaclng andtype-actuatmg levers at transversely aligned points, means forsupporting the universal-device to rock up and down about an axis,extending transversely of the machine, the spacing levers being adapted,to exert pressure on said device closer to its fulcrum than thetype-actuatin g levers, and means for limiting the throw of the spacinglevers to less than the throw of the type-actuating levers.

6. In a typewriting machine, the combination-of character keys, aspace'bar, spacing levers operable by the space bar, typeactuatinglevers operable by the character keys, pivotally supported universal barmechanism, projections on all of said levers adapted to engage saidmechanism, the projections on the spacing levers being so located as toexert pressure on said mechanism closer to its pivotal point than theprojections on the key levers, means pivotally sup porting the spacingand type-actuating levers equal distances from. the pivotal point of theuniversal bar mechanism, and means for limiting the downward movementofthe space bar to less than the downward movement of the character keys.

7. In a typewriting machine the combination 'of character keys, a spacebar, spacing levers operable by. the space bar, typeactuating leversoperable by the character keys, a universal rocking device underlyingall the levers, the spacing levers being adapted to exert pressure onsaid device closer to its fulcrum than thetype-actuating levers, stopscarried by the spacing levers ex tending forwardly of the space bar, andvertically spaced abutments on the machine frame cooperating with saidstops to restrict the throw of the space bar to less than the throw ofthe character keys. j

' 8. In a typewriting machine, the combination of a main frame havingvertically spaced flanges extending inwardly from the front cross-barthereof, a pair of sheet metal levers extending fore and aft of theframe and fulcrumed therein, a space-bar supported on theforward ends ofsaid levers, and integral bendable-stop lugs on the forward ends of thelevers, the lug on each lever extending forwardly between the flanges onthe frame and cooperating therewith to limit the upward and downwardmovements of the space bar. I I

9. In a typewriting machine, the combination of an upstandingescapement-actuating member, means pivotally supporting said member torock fore and aft of the machine, a universal Jkey-actuated rockingframe, means pivotally supportingsaid frame to rock up and down about anaxis extending transversely of themachine in front of said member, andmeans forming a slidingnndplvotal connectlon between the upstandingmember and the rocking frame at the rear of the pivotal axis of saidframe and forward of the pivotal axis of said member.

10. In a typewriting machine, the combilevers extending fore and aft ofthe machine and supporting said bar forward of their pivots, meanspivotally supporting the levers intermediate their ends to rock up anddown, key-operated levers foroperating type bars adapted to move theuniversal bar downward when the keys are depressed, arms extendingforwardly fromthe side portions of said bail, and means forming slidingand pivotal connections between the rear end of said levers'and theforward ends of said arms.

11. In a typewriting machine, the combination of an upstandingescapement-operating member, means pivotally supporting said member toswing fore and aft of the machine, arms held to said member andextending forwardly therefrom, a universal bar, and levers pivotallysupported intermediate their ends to rock up and down, said levers beingconnected with said bar forward of their pivots and loosely engagingsaid arms at the rear of their pivots for rocking theescapement-operating member.

12. In a typewriting machine, the combination of a rockingescapement-actuating frame, a universal key-actuated frame, meanspivotally supporting the frames substantially at right angles to eachother to rock about horizontal axes extending transversely of themachine, and a direct pinand-slot connection between said frames forrocking the escapement-actuating frame through the medium of theuniversal keyactuated frame. 7

13. In a typewriting machine, the combination of an upstandinginvertedU-shaped escapement-operating bail, means pivotally supportingthe side portions of the bail adjacent their lower ends to swing foreand aft of the machine, forwardly extending arms on the side portions ofthe bail, a pair of levers connected at their rear ends with said arms,means pivotally supporting said levers intermediate their ends to rockup and down, a space bar, spacing levers operable by the space bar,character keys,typebar actuating levers operable by the character keys,and a pair of transverse bars supported by the vertically rocking leversdifferent distances in front of their pivots, said spacing levers beingarranged to engage the rear one of said bars and the type-bar actuatinglevers being arranged to engage the other of said bars.

14:- In atypewriting machine, the combination of a rockingescapement-actuating member, a rocking universal member, means pivotallysupporting said members substan tially at right angles to each other,said universal member directly engaging the escape ment actuating memberfor rocking the latter member, a space bar, character keys, leversoperable by the space bar for exerting pressure on the universal memberclose to the pivotal axis thereof, and key-levers operable by thecharacter keys adapted to press against the universal member at pointsfarther from the pivotal axis of said member than the space-bar-operatedlevers.

15.7 In a typewriting machine, the combination of a pivotally supportedupstanding escapement-operating bail, a universal bar, forwardlyextending arms on the side members of the bail, rearwardly extendingrock arms held to the universal bar, and means for pivotally connectingthe rear ends of said rock arms with the forward ends of the arms on thebail.

I This specification signed this 14th day of July A. D. 1919.

EDWIN L. HARMON.

